大约有 48,000 项符合查询结果（耗时：0.0312秒） [XML]
One class per file rule in .NET? [closed]
...ach one is a 4 liner, I could have a separate file for each one or I could group the exceptions and have a file per group. For me what seems the most rational/pragmatic approach is to group them, and just have a few files, because it's more efficient time/coding wise (I don't have to right-click -&g...
What is the leading LINQ for JavaScript library? [closed]
...main: "europe"},
{username: "cdeckard", domain: "nort_america"}];
var groups = [{user: "ASMITH", groupName: "base_users"},
{user: "TMCFARLAND", groupName: "admins"},
{user: "CDECKARD", groupName: "base_users"},
{user: "CDECKARD", groupName: "testers"}];
var results = $linq(users).j...
Pandas count(distinct) equivalent
...
I believe this is what you want:
table.groupby('YEARMONTH').CLIENTCODE.nunique()
Example:
In [2]: table
Out[2]:
CLIENTCODE YEARMONTH
0 1 201301
1 1 201301
2 2 201301
3 1 201302
4 2 20130...
How to get all columns' names for all the tables in MySQL?
...ou a comma-delimited list of the columns in each table:
SELECT table_name,GROUP_CONCAT(column_name ORDER BY ordinal_position)
FROM information_schema.columns
WHERE table_schema = DATABASE()
GROUP BY table_name
ORDER BY table_name
Note : When using tables with a high number of columns and/or with ...
Git: How to rebase to a specific commit?
...nder why it does not work for me, in a slightly different scenario. I want group skip the pep8 and be based on master. git rebase temp (when on group) gives up with "Current branch groups is up to date.".
– Alois Mahdal
Jun 25 '14 at 15:32
...
How to extract a string using JavaScript Regex?
...t the * inside the parenthesis as
suggested above. Otherwise your matching
group will contain only one
character.
Get rid of the ^ and $. With the global option they match on start and end of the full string, rather than on start and end of lines. Match on explicit newlines instead.
I suppose you w...
Converting Integer to String with comma for thousands
...
This forces the US style grouping which always uses ,, however there are also regions using . for grouping instead. In a word, hard-coding a locale is considered a bad practice.
– Hai Zhang
Sep 26 '17 at 21:42
...
How to allow only one radio button to be checked?
... be sent when submitting the form. The name is used by the browser to set "groups" of radio buttons, only one radio button in each group can be selected at one time and selecting other will clear the previous selection. :)
– Shadow Wizard is Ear For You
Mar 24 ...
Disable all table constraints in Oracle
...parent_cons_name
,LISTAGG ( column_name, ',') WITHIN GROUP (ORDER BY position) child_columns
FROM user_cons_columns a
,user_constraints b
WHERE a.constraint_name = b.constraint_name AND b.constraint_type = 'R'
...
Split string based on a regular expression
...
By using (,), you are capturing the group, if you simply remove them you will not have this problem.
>>> str1 = "a b c d"
>>> re.split(" +", str1)
['a', 'b', 'c', 'd']
However there is no need for regex, str.split without any de...